Phospholipase A2 (PLA2) toxins are common and abundant components of Australasian elapid venoms. These toxins are associated with a range of activities including neurotoxicity, myotoxicity and coagulation disturbances. Snake venom phospholipase A2 (PLA2) heterotrimer that acts as a potent presynaptic neurotoxin by blocking synaptic transmission and synaptic vesicle recycling.